Eruptions of the Yellowstone volcanic system have included the two largest volcanic eruptions in North America in the past few million years; the third largest was at Long Valley in California and produced the Bishop ash bed.
On the diesel Passat, the TDI badge stands for Turbocharged Direct Injection, which isn't really all that helpful as the gasoline-powered Passat is also turbocharged and also uses direct injection. Volkswagen attempts to clear this up by calling this Passat the Passat TDI Clean Diesel.
Group 1 Automotive, Inc. (NYSE: GPI) is an international Fortune 500 automotive retailer with automotive dealerships and collision centers in the United States, United Kingdom and Brazil. Group 1 sells new and used cars and light trucks, arranges financial services, provides maintenance and repair services, and sells vehicle parts.